High 5V USB blower fan delivers efficient cooling with super quiet operations and oil-containing bearing design, ideal for maintaining great temperatures in compact electronic devices Optimizes airflows in tight compartments like printer extruders, CPU coolers, or small scale electronic enclosures during prolonged high intensities operations Engineered with oil bearing construction and USB plugs and playing functionality, this 50mm blower fan ensures extended equipment lifespans through stable temperature control Essential for DIYer enthusiasts and professional managing thermal regulation in printers, PC builds, or server equipment requiring precisions cooling solution Compact 50x50x15mm design, with 4300RPM speed and 3.5CFM airflows for effective heat dissipation in confined spaces